Add settings page for managing forecasting API key and URL via UI

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/node_modules/es-toolkit/dist/compat/predicate/isNative.mjs

@@ -0,0 +1,26 @@
+//#region src/compat/predicate/isNative.ts
+const functionToString = Function.prototype.toString;
+/** Used to detect if a method is native. */
+const IS_NATIVE_FUNCTION_REGEXP = RegExp(`^${functionToString.call(Object.prototype.hasOwnProperty).replace(/[\\^$.*+?()[\]{}|]/g, "\\$&").replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, "$1.*?")}$`);
+/**
+* Checks if a given value is a native function.
+*
+* This function tests whether the provided value is a native function implemented by the JavaScript engine.
+* It returns `true` if the value is a native function, and `false` otherwise.
+*
+* @param value - The value to test for native function.
+* @returns `true` if the value is a native function, `false` otherwise.
+*
+* @example
+* const value1 = Array.prototype.push;
+* const value2 = () => {};
+* const result1 = isNative(value1); // true
+* const result2 = isNative(value2); // false
+*/
+function isNative(value) {
+	if (typeof value !== "function") return false;
+	if (globalThis?.["__core-js_shared__"] != null) throw new Error("Unsupported core-js use. Try https://npms.io/search?q=ponyfill.");
+	return IS_NATIVE_FUNCTION_REGEXP.test(functionToString.call(value));
+}
+//#endregion
+export { isNative };